【摘要】 矩阵系统作为视频监控的核心正发挥着重要的作用。文中对矩阵系统所存在的固有的信号串扰缺陷进行了比较详尽的分析,提出了多级切换的设计方案。通过举例,给出了以CD22M3494为核心的三级切换硬件构成,及软件设计过程。该方法基本消除了在矩阵系统中各通道之间存在的信号串扰现象,大大提高了视频信号的各项指标。更多还原

【Abstract】 Matrix system plays an important function as a core of Video Monitor. This paper proposes a design scheme on multi-level switching. We provide a detail analysis about the defects of inherent signal crosstalk existing in Matrix system. And we give three-levels swiching hardware structure with CD22M3494 as the core and the design process of software. Our method basically eliminates the problem of signal crosstalk in the channels of Matrix system and improves the performance index of video signal greatly.更多还原